What is a good sentence for embarrassment?

It's hard to give just one sentence for embarrassment, as the feeling itself can be expressed in many ways. Here are a few options depending on the level of embarrassment and the situation:

For mild embarrassment:

* My cheeks burned with a sudden, unexpected heat.

* A wave of awkwardness washed over me.

* I felt a blush creep up my neck.

For moderate embarrassment:

* The floor suddenly became very interesting.

* I wished I could disappear.

* My heart pounded in my chest, and my palms felt clammy.

For extreme embarrassment:

* I wanted to crawl under a rock and never come out.

* I felt like a complete fool.

* My face burned with shame.

For a humorous take on embarrassment:

* I laughed nervously, hoping no one noticed how red my face was.

* I tried to act cool, but my voice squeaked.

* I'm pretty sure I just turned into a tomato.

The best sentence for your situation will depend on the specific context and how you want to portray the emotion.